Curb Your Anger with Gratitude

“Jesus was asked, “O Spirit of God, what is the most tremendous and most difficult thing in this world and the next?”
“The wrath of God,” he answered.
“What can save us from it?” they asked.
“Curb your anger; restrain your wrath,” he replied.
The way to do this is to oppose the self and, when it wants to complain about something, give thanks instead. Exaggerate it so much that love is generated within you, for to give false thanks is to seek love from God.
So says our great master [Muhammad]: to complain of a creature is to complain of the Creator. He has also said that enmity and anger are hidden within you, from you, like fire. When you see a spark leap out of this fire, put it out right away, so that it may return to non-existence from whence it came. If you help it along with the match of a word of recrimination or retort, it will find a way to come again out of non-existence and only with difficulty will you be able to send it back.
Repel your enemy with something better, so that you may vanquish him: your enemy is not flesh and bone, it is his evil thought. When that is repelled from you by means of abundance of gratitude, it will be repelled from him also. This occurs naturally; as the saying goes, “The human being is a slave to beneficence.”

Jalaluddin Mevlana Rumi (1207-1273)
Islam
Fihi ma Fihi

Rumi, Jalaluddin Mevlana. The Rumi Daybook. Translated by Kabir Helminski and Camille Helminski, Shambhala Publications, Inc., 2012, p. 321 [Rumi: Fihi ma Fihi: Discourse 68].